Headlight-lens



H. J. WAGNER.

HEADLIGHT LENS.

APPLICATION FILED AUGJB. 1920.

PateIitedJune 2s, 1.921.

v ticularly to a lens for use mannirwaeirnn, or sess on, iaassaczinsnrrs,

ASSIGNQR or RTE-HALF T9 PHILIP F. MOS-HWY, OZ? BOSTON, MASSACHUSETTS.

HEADLIGHT-LENS.

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Specification of Letters Patent.

Patented June 28, 1921.

-Applicaticn filed August 28. 1920. Serial No. 406,829.

To all whom it may concern:

Be it known that l, HENRY J. citizen of the United States, residing at Boston, inlhe-coun-ty of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Headlight-Lenses, of which the following is a specification, reference being had to the accompanying drawm s.

lhis invention relates to lenses and parin connection with headlights of automobiles.

An object of the invention is to provide a lens which, while utilizing the full force of the light, entirely eliminates glare.

Another object is to provide a lens of this character shaded by various means to permit the rays of light to pass therethrough without causing glare to persons in the path of the light.

A still further object of the ihvention is to provide a lens of this character wherein a portion of the lens projecting light directly in the path of vision of a person is opaque and also translucent and a portion of the lens projecting light above or below the direct path of vision of the eye of the person,

is transparent.

Another object is to provide a lens of this character having an opaque disk detachably secured to its central portion said disk being removable to permit the full force of the light to be used when passing through districts that do not require or necessitate dimmers. v

With these and other objects in View, the invention consists in the improved construction and arrangement of parts to be hereinafter more particularly described, fully claimed and illustrated in the accompanying drawings, in which Figure 1 is a plan view of a lens constructed in accordance with an embodiment of the invention,

Fig.9 is a transverse sectional view, and

F ig. 3 is a. modified form wherein the opaque central portion is a part of the lens.

Referring to the drawings, 5 designates a lens adapted to be disposed in a headlight of an automobile. The lens may be formed'in accordance with the size and shape of the headlight. It also has its front and rear faces disposed in parallel planes, each face being flat. An opening 6 is provided in the WAGNER, a

I portion of the transparent'portion central portion of the iens and adapted to register with an openin Z formed in an opaque disk 8. Thisdisk is opaque and is intended to prevent the rays of the light from projecting directly from the center of the lens, and is held in engagement with the lens by the securing means 9 consisting of a cap 10 having a threaded shank 11, said shank extending through the openings 6 and 7. V A fiber washer 12 is disposed between the cap 10 and the disk 8, a second fiber washer 13 is disposed between the disk and the face of the lens, a fiber washer l4 and nut 15 being disposed on the shank 11. By this means the disk 8 may be removed desired to use the direct force of the light when the elimination oi glare is not necessary. At the same time, it can be readily applied.

The portion 1.6 of the lens surrounding the periphery of the disk 8 is transparent while a translucent portion 17 surrounds the outer 16. The upper portion of the translucent portion 17 merges with a translucent segmental por-.

tion 18 which extends tothe periphery of the upper portion of the lens. The lower portion 19 of the lens from the outer portion of the translucent portion 17 is transparent from the ends of the segmental translucent portion 18 to the periphery of the lower portion of the lens.

With this lens, direct force of light is'prevented from passing through the center of the lens by the opaque disk or screen. At the same time, the full force of the light may be projected throu tion of the lens a jacent the edge of the opaque disk or screen. Furthermore, the translucent portion of the screen or screening means permits projection of the light rays and also prevents glare, while the greater portion of the lower half of the lensis left transparent so that the light may be directed in all its intensity to properly light the path of the automobile. By this novel arrangement it is not necessary to screen one entire section of the lens and leave the re: maining section unscreened, but by the particular disposition'of the translucent screening means it is possible for the light to be projected in its intensity through both the up er and lower portions of the lens.

nother important feature, is that the h the transparent porto properly illuminate upper portion of the translucent portion 17 merges with the segmental translucent portion 18, a plurality of transparent indentations 20 being formed in the portion 17. Likewise, a plurality of indentations 21 are formed in the lower portion ofthe translucent portion 17 so that a substantially castellated circular translucent portion is formed. In this way, the rays of light are divided when passing through the interrupted or castellated circle formed by the indentations 20 and 21 and the translucent portion 17. The translucent portions of the lensmay be formed by any suitable means such as frosting or said blasting. If desired, the disk 8 may be removed and an opaque central portion 8 formed in the lens by any suitable method, as shown in Fig. 3.

From the foregoing it will be readily seen that this invention provides a novel form of lens, which permits a headlight to be used the path of travel of an automobile without causing confusion 1,3ss,25o

to pedestrians or drivers of approaching vehicles from the glare of the headlights.

What is claimed is A device of the character described com prising a transparent lens, having opaque screening means disposed centrally of the lens, the upper. portion of said lens having translucent screening means, said translucent screening means extending from the edge of the upper portion to the intermediate portion of the lens and terminating in spaced relation to the opaque screening means, whereby a transparent portion of the lens is exposed, said translucent screening means also extending in semi-circular formation over the intermediate portion of the lower portion of said transparent lens in spaced relation to the edge of said lower portion and the opaque screening means.

In testimony whereof I hereunto affix my signature.

HENRY J. \VAGNER. 

